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Properties of Matter. How do we tell different types of matter apart?. Salt or Sugar?. What is a property?. A distinctive attribute or quality of something An observation. Two Types of Properties. There are two types of properties: Physical Properties Chemical Properties.

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Presentation Transcript
what is a property
What is a property?
  • A distinctive attribute or quality of something
  • An observation
two types of properties
Two Types of Properties
  • There are two types of properties:
    • Physical Properties
    • Chemical Properties
physical properties
Physical Properties
  • Physical properties are properties that you can observe without changing the identity of the material.
  • For example: A rubber band is stretchy. If you stretch a rubber band, it is still a rubber band.
physical properties1
Physical Properties
  • Physical properties are descriptive.
  • They include the appearance and behavior.
    • The appearance of the item is how it looks, feels, tastes, as well as any measurable characteristics like mass, volume, etc.
    • The behavior of an item is going to be how it reacts with certain other things. For instance, metals are usually attracted by magnets.
physical properties2
Physical Properties
  • What are some physical properties of this honey?

Yellow-ish

Sticky

sweet

common physical properties
Common Physical Properties
  • Magnetic
  • Dense
  • Color
  • Size
  • Shape
physical change
Physical Change
  • A change in the size, shape, or phase of matter is known as a physical change.
  • A physical change is one in which the basic identity of the objectdoes not change!
  • Another way to look at it is that a physical change is one which you can change back.
common physical changes
Common Physical Changes
  • Physical changes change the appearance of a substance, but the chemical makeup does not change.
  • Examples of Physical Changes include:
    • Size
    • Shape
    • Phase (solid, liquid, gas)
    • Dissolving
chemical properties
Chemical Properties
  • A characteristic that indicates it can undergo an chemical change.
common chemical properties
Common Chemical Properties
  • Flammability
  • Reactivity
  • Rust (Oxidation)
chemical properties1
Chemical Properties
  • What is a chemical property of this railroad spike?
chemical change
Chemical Change
  • The changing of one substance into another.
  • New substances are produced because of the breaking of chemical bonds.
  • ONE WHICH YOU CAN’T CHANGE BACK
detecting chemical change
Detecting Chemical Change
  • A new substance is ALWAYS produced in a chemical change.
indicators
Indicators
  • There are five indicators that help us to know that a chemical change is taking place:
    • Unexpected Color Change
    • Energy Transfer
    • Precipitate Produced
    • Odor Produced
    • Gas Produced
2 energy transfer
2. Energy Transfer
  • Endothermic (gets cold)
  • Exothermic (gets hot)
  • Sound produced
  • Light produced
3 precipitate produced
3. Precipitate Produced
  • Two liquids produce a solid
  • The solution sometimes looks cloudy or milky.
  • Solid falls to the bottom of the solution.
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